[REGRESSION] omapdrm/N900 display broken

[Ivaylo Dimitrov]

On 27.11.20 г. 13:45 ч., Tomi Valkeinen wrote:
> On 27/11/2020 01:17, Ivaylo Dimitrov wrote:
>> Hi Tomi,
>>
>> On 26.11.20 г. 16:11 ч., Tomi Valkeinen wrote:
>>> Hi Aaro, Ivaylo,
>>>
>>> On 24/11/2020 23:03, Ivaylo Dimitrov wrote:
>>>
>>>> Is there any progress on the issue? I tried 5.9.1 and still nothing displayed.
>>>
>>> Can you test the attached patch?
>>>
>>
>> With this patch I don't see oops that Aaro reported, so:
>>
>> Tested-by: Ivaylo Dimitrov <ivo.g.dimitrov.75 at gmail.com>
>>
>> Seems to fix the particular issue, however, now we get another oops. As this is not upstream kernel
>> but one with PVR related patches, I will try again with vanilla 5.9.
>>
>> Just in case oops rings any bells (the line in question is
>> https://github.com/maemo-leste/droid4-linux/blob/maemo-5.9/drivers/gpu/drm/omapdrm/omap_gem.c#L801)
> 
> Do the PVR patches touch omapdrm? The call stack looks like normal boot time probing stuff, not
> something happening later (possibly from PVR).
> 

pvr driver is not even enabled in that particular config, however, I see 
"HACK: drm/omap: Add omapdrm plugin API" patch in the tree that touches 
omap-gem.c, I don't really want to just create some noise for problems 
that are created by out-of-tree patches. And yeah, it looks like a 
normal boot time probing stuff. As soon as I have some spare time 
(hopefully later today) I will try vanilla 5.9.x with 
omap2plus_defconfig and will report.

Ivo